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 <p>
         The header <code class="literal"><a href="../../../../../boost/cstdint.hpp" target="_top">&lt;boost/cstdint.hpp&gt;</a></code>
         provides the typedef's useful for writing portable code that requires certain
         integer widths. All typedef's are in namespace boost.
       </p>
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         The specifications for these types are based on the ISO/IEC 9899:1999 C Language
         standard header &lt;stdint.h&gt;. The 64-bit types required by the C standard
         are <span class="emphasis"><em>not required</em></span> in the boost header, and may not be
         supplied for all platforms/compilers, because <code class="literal">long long</code>
         is not [yet] included in the C++ standard.
       </p>
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         See <a href="../../../test/cstdint_test.cpp" target="_top">cstdint_test.cpp</a> for
         a test program.
       </p>
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 <p>
         The organization of the Boost.Integer headers and classes is designed to
         take advantage of &lt;stdint.h&gt; types from the 1999 C standard without
         causing undefined behavior in terms of the 1998 C++ standard. The header
         &lt;boost/cstdint.hpp&gt; makes the standard integer types safely available
         in namespace <code class="literal">boost</code> without placing any names in namespace
         <code class="literal">std</code>. The intension is to complement rather than compete
         with the C++ Standard Library. Should some future C++ standard include &lt;stdint.h&gt;
         and &lt;cstdint&gt;, then &lt;boost/cstdint.hpp&gt; will continue to function,
         but will become redundant and may be safely deprecated.
       </p>
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         Because these are boost headers, their names conform to boost header naming
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 <p>
         As an implementation artifact, certain C &lt;limits.h&gt; macro names may
         possibly be visible to users of &lt;boost/cstdint.hpp&gt;. Don't use these
         macros; they are not part of any Boost-specified interface. Use <code class="literal">boost::integer_traits&lt;&gt;</code>
         or <code class="literal">std::numeric_limits&lt;&gt;</code> instead.
       </p>
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         As another implementation artifact, certain C &lt;stdint.h&gt; typedef names
         may possibly be visible in the global namespace to users of &lt;boost/cstdint.hpp&gt;.
         Don't use these names, they are not part of any Boost-specified interface.
         Use the respective names in namespace <code class="literal">boost</code> instead.
       </p>
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       integer types</a>
 </h3></div></div></div>
 <p>
         The typedef <code class="literal">int#_t</code>, with # replaced by the width, designates
         a signed integer type of exactly # bits; for example <code class="literal">int8_t</code>
         denotes an 8-bit signed integer type. Similarly, the typedef <code class="literal">uint#_t</code>
         designates an unsigned integer type of exactly # bits.
       </p>
 <p>
         These types are optional. However, if a platform supports integer types with
         widths of 8, 16, 32, 64, or any combination thereof, then &lt;boost/cstdint.hpp&gt;
         does provide the corresponding typedefs.
       </p>
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       </p>
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       integer types</a>
 </h3></div></div></div>
 <p>
         The typedef <code class="literal">int_least#_t</code>, with # replaced by the width,
         designates a signed integer type with a width of at least # bits, such that
         no signed integer type with lesser size has at least the specified width.
         Thus, <code class="literal">int_least32_t</code> denotes the smallest signed integer
         type with a width of at least 32 bits. Similarly, the typedef name <code class="literal">uint_least#_t</code>
         designates an unsigned integer type with a width of at least # bits, such
         that no unsigned integer type with lesser size has at least the specified
         width.
       </p>
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         The following minimum-width integer types are provided for all platforms:
       </p>
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             <code class="literal">int_least8_t</code>
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             <code class="literal">int_least32_t</code>
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             <code class="literal">uint_least8_t</code>
           </li>
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             <code class="literal">uint_least16_t</code>
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             <code class="literal">uint_least32_t</code>
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         The following types are available only if, after including &lt;boost/cstdint.hpp&gt;,
         the macro BOOST_NO_INT64_T is not defined:
       </p>
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             <code class="literal">int_least64_t</code>
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       </p>
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       minimum-width integer types</a>
 </h3></div></div></div>
 <p>
         The typedef <code class="literal">int_fast#_t</code>, with # replaced by the width,
         designates the fastest signed integer type with a width of at least # bits.
         Similarly, the typedef name <code class="literal">uint_fast#_t</code> designates the
         fastest unsigned integer type with a width of at least # bits.
       </p>
 <p>
         There is no guarantee that these types are fastest for all purposes. In any
         case, however, they satisfy the signedness and width requirements.
       </p>
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         The following fastest minimum-width integer types are provided for all platforms:
       </p>
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             <code class="literal">int_fast8_t</code>
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             <code class="literal">int_fast32_t</code>
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             <code class="literal">uint_fast8_t</code>
           </li>
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             <code class="literal">uint_fast16_t</code>
           </li>
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             <code class="literal">uint_fast32_t</code>
           </li>
 </ul></div>
 <p>
         The following types are available only if, after including &lt;boost/cstdint.hpp&gt;,
         the macro BOOST_NO_INT64_T is not defined:
       </p>
 <div class="itemizedlist"><ul class="itemizedlist" type="disc">
 <li class="listitem">
             <code class="literal">int_fast64_t</code>
           </li>
 <li class="listitem">
             <code class="literal">uint_fast64_t</code>
           </li>
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         All other fastest minimum-width integer types are optional.
       </p>
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       integer types</a>
 </h3></div></div></div>
 <p>
         The typedef <code class="literal">intmax_t </code>designates a signed integer type
         capable of representing any value of any signed integer type.
       </p>
 <p>
         The typedef <code class="literal">uintmax_t</code> designates an unsigned integer type
         capable of representing any value of any unsigned integer type.
       </p>
 <p>
         These types are provided for all platforms.
       </p>
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 <div class="titlepage"><div><div><h3 class="title">
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       Constant Macros</a>
 </h3></div></div></div>
 <p>
         The following macros are always defined after inclusion of this header, these
         allow integer constants of at least the specified width to be declared: INT8_C,
         UINT8_C, INT16_C, UINT16_C, INT32_C, UINT32_C, INTMAX_C, UINTMAX_C.
       </p>
 <p>
         The macros INT64_C and UINT64_C are also defined if the the macro BOOST_NO_INT64_T
         is not defined.
       </p>
 <p>
         The C99 macro __STDC_CONSTANT_MACROS is also defined as an artifact of the
         implementation.
       </p>
 <p>
         For example:
       </p>
 <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">cstdint</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>

 <span class="comment">// Here the constant 0x1FFFFFFFF has the correct suffix applied:
 </span><span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">uint64_t</span> <span class="identifier">c</span> <span class="special">=</span> <span class="identifier">INT64_C</span><span class="special">(</span><span class="number">0</span><span class="identifier">x1FFFFFFFF</span><span class="special">);</span>
 </pre>
 </div>
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         Distributed under the Boost Software License, Version 1.0. (See accompanying
         file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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	<p>
	The header <code class="literal"><a href="../../../../../boost/cstdint.hpp" target="_top"><boost/cstdint.hpp></a></code>
	provides the typedef's useful for writing portable code that requires certain
	integer widths. All typedef's are in namespace boost.
	</p>
	<p>
	The specifications for these types are based on the ISO/IEC 9899:1999 C Language
	standard header <stdint.h>. The 64-bit types required by the C standard
	are <span class="emphasis"><em>not required</em></span> in the boost header, and may not be
	supplied for all platforms/compilers, because <code class="literal">long long</code>
	is not [yet] included in the C++ standard.
	</p>
	<p>
	See <a href="../../../test/cstdint_test.cpp" target="_top">cstdint_test.cpp</a> for
	a test program.
	</p>
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	</h3></div></div></div>
	<p>
	The organization of the Boost.Integer headers and classes is designed to
	take advantage of <stdint.h> types from the 1999 C standard without
	causing undefined behavior in terms of the 1998 C++ standard. The header
	<boost/cstdint.hpp> makes the standard integer types safely available
	in namespace <code class="literal">boost</code> without placing any names in namespace
	<code class="literal">std</code>. The intension is to complement rather than compete
	with the C++ Standard Library. Should some future C++ standard include <stdint.h>
	and <cstdint>, then <boost/cstdint.hpp> will continue to function,
	but will become redundant and may be safely deprecated.
	</p>
	<p>
	Because these are boost headers, their names conform to boost header naming
	conventions rather than C++ Standard Library header naming conventions.
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	<p>
	As an implementation artifact, certain C <limits.h> macro names may
	possibly be visible to users of <boost/cstdint.hpp>. Don't use these
	macros; they are not part of any Boost-specified interface. Use <code class="literal">boost::integer_traits<></code>
	or <code class="literal">std::numeric_limits<></code> instead.
	</p>
	<p>
	As another implementation artifact, certain C <stdint.h> typedef names
	may possibly be visible in the global namespace to users of <boost/cstdint.hpp>.
	Don't use these names, they are not part of any Boost-specified interface.
	Use the respective names in namespace <code class="literal">boost</code> instead.
	</p>
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	integer types</a>
	</h3></div></div></div>
	<p>
	The typedef <code class="literal">int#_t</code>, with # replaced by the width, designates
	a signed integer type of exactly # bits; for example <code class="literal">int8_t</code>
	denotes an 8-bit signed integer type. Similarly, the typedef <code class="literal">uint#_t</code>
	designates an unsigned integer type of exactly # bits.
	</p>
	<p>
	These types are optional. However, if a platform supports integer types with
	widths of 8, 16, 32, 64, or any combination thereof, then <boost/cstdint.hpp>
	does provide the corresponding typedefs.
	</p>
	<p>
	The absence of int64_t and uint64_t is indicated by the macro <code class="computeroutput"><span class="identifier">BOOST_NO_INT64_T</span></code>.
	</p>
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	integer types</a>
	</h3></div></div></div>
	<p>
	The typedef <code class="literal">int_least#_t</code>, with # replaced by the width,
	designates a signed integer type with a width of at least # bits, such that
	no signed integer type with lesser size has at least the specified width.
	Thus, <code class="literal">int_least32_t</code> denotes the smallest signed integer
	type with a width of at least 32 bits. Similarly, the typedef name <code class="literal">uint_least#_t</code>
	designates an unsigned integer type with a width of at least # bits, such
	that no unsigned integer type with lesser size has at least the specified
	width.
	</p>
	<p>
	The following minimum-width integer types are provided for all platforms:
	</p>
	<div class="itemizedlist"><ul class="itemizedlist" type="disc">
	<li class="listitem">
	<code class="literal">int_least8_t</code>
	</li>
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	<code class="literal">int_least16_t</code>
	</li>
	<li class="listitem">
	<code class="literal">int_least32_t</code>
	</li>
	<li class="listitem">
	<code class="literal">uint_least8_t</code>
	</li>
	<li class="listitem">
	<code class="literal">uint_least16_t</code>
	</li>
	<li class="listitem">
	<code class="literal">uint_least32_t</code>
	</li>
	</ul></div>
	<p>
	The following types are available only if, after including <boost/cstdint.hpp>,
	the macro BOOST_NO_INT64_T is not defined:
	</p>
	<div class="itemizedlist"><ul class="itemizedlist" type="disc">
	<li class="listitem">
	<code class="literal">int_least64_t</code>
	</li>
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	</li>
	</ul></div>
	<p>
	All other minimum-width integer types are optional.
	</p>
	</div>
	<div class="section">
	<div class="titlepage"><div><div><h3 class="title">
	<a name="boost_integer.cstdint.fastest_minimum_width_integer_types"></a><a class="link" href="cstdint.html#boost_integer.cstdint.fastest_minimum_width_integer_types" title="Fastest minimum-width integer types">Fastest
	minimum-width integer types</a>
	</h3></div></div></div>
	<p>
	The typedef <code class="literal">int_fast#_t</code>, with # replaced by the width,
	designates the fastest signed integer type with a width of at least # bits.
	Similarly, the typedef name <code class="literal">uint_fast#_t</code> designates the
	fastest unsigned integer type with a width of at least # bits.
	</p>
	<p>
	There is no guarantee that these types are fastest for all purposes. In any
	case, however, they satisfy the signedness and width requirements.
	</p>
	<p>
	The following fastest minimum-width integer types are provided for all platforms:
	</p>
	<div class="itemizedlist"><ul class="itemizedlist" type="disc">
	<li class="listitem">
	<code class="literal">int_fast8_t</code>
	</li>
	<li class="listitem">
	<code class="literal">int_fast16_t</code>
	</li>
	<li class="listitem">
	<code class="literal">int_fast32_t</code>
	</li>
	<li class="listitem">
	<code class="literal">uint_fast8_t</code>
	</li>
	<li class="listitem">
	<code class="literal">uint_fast16_t</code>
	</li>
	<li class="listitem">
	<code class="literal">uint_fast32_t</code>
	</li>
	</ul></div>
	<p>
	The following types are available only if, after including <boost/cstdint.hpp>,
	the macro BOOST_NO_INT64_T is not defined:
	</p>
	<div class="itemizedlist"><ul class="itemizedlist" type="disc">
	<li class="listitem">
	<code class="literal">int_fast64_t</code>
	</li>
	<li class="listitem">
	<code class="literal">uint_fast64_t</code>
	</li>
	</ul></div>
	<p>
	All other fastest minimum-width integer types are optional.
	</p>
	</div>
	<div class="section">
	<div class="titlepage"><div><div><h3 class="title">
	<a name="boost_integer.cstdint.greatest_width_integer_types"></a><a class="link" href="cstdint.html#boost_integer.cstdint.greatest_width_integer_types" title="Greatest-width integer types">Greatest-width
	integer types</a>
	</h3></div></div></div>
	<p>
	The typedef <code class="literal">intmax_t </code>designates a signed integer type
	capable of representing any value of any signed integer type.
	</p>
	<p>
	The typedef <code class="literal">uintmax_t</code> designates an unsigned integer type
	capable of representing any value of any unsigned integer type.
	</p>
	<p>
	These types are provided for all platforms.
	</p>
	</div>
	<div class="section">
	<div class="titlepage"><div><div><h3 class="title">
	<a name="boost_integer.cstdint.integer_constant_macros"></a><a class="link" href="cstdint.html#boost_integer.cstdint.integer_constant_macros" title="Integer Constant Macros">Integer
	Constant Macros</a>
	</h3></div></div></div>
	<p>
	The following macros are always defined after inclusion of this header, these
	allow integer constants of at least the specified width to be declared: INT8_C,
	UINT8_C, INT16_C, UINT16_C, INT32_C, UINT32_C, INTMAX_C, UINTMAX_C.
	</p>
	<p>
	The macros INT64_C and UINT64_C are also defined if the the macro BOOST_NO_INT64_T
	is not defined.
	</p>
	<p>
	The C99 macro __STDC_CONSTANT_MACROS is also defined as an artifact of the
	implementation.
	</p>
	<p>
	For example:
	</p>
	<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">cstdint</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>

	<span class="comment">// Here the constant 0x1FFFFFFFF has the correct suffix applied:
	</span><span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">uint64_t</span> <span class="identifier">c</span> <span class="special">=</span> <span class="identifier">INT64_C</span><span class="special">(</span><span class="number">0</span><span class="identifier">x1FFFFFFFF</span><span class="special">);</span>
	</pre>
	</div>
	</div>
	<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
	<td align="left"></td>
	<td align="right"><div class="copyright-footer">Copyright © 2001 -2009 Beman Dawes, Daryle Walker, Gennaro Prota,
	John Maddock<p>
	Distributed under the Boost Software License, Version 1.0. (See accompanying
	file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
	</p>
	</div></td>
	</tr></table>
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